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Sprite 1984 - 1993
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Sprite 1984 - 1993.iso
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signal.h
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C/C++ Source or Header
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1991-10-24
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/*
* Copyright (c) 1982, 1986 Regents of the University of California.
* All rights reserved. The Berkeley software License Agreement
* specifies the terms and conditions for redistribution.
*
* @(#)signal.h 7.3 (Berkeley) 5/14/88
* $Header: /sprite/src/lib/include/RCS/signal.h,v 1.14 91/10/24 17:49:43 rab Exp $
*/
#ifndef _SIGNAL
#define _SIGNAL
#include <cfuncproto.h>
#include <machSignal.h>
#ifndef NSIG
#define NSIG 32
#endif
#define SIGHUP 1 /* hangup */
#define SIGINT 2 /* interrupt */
#define SIGQUIT 3 /* quit */
#define SIGILL 4 /* illegal instruction (not reset when caught) */
#define SIGTRAP 5 /* trace trap (not reset when caught) */
#define SIGIOT 6 /* IOT instruction */
#define SIGABRT SIGIOT /* compatibility */
#define SIGEMT 7 /* EMT instruction */
#define SIGFPE 8 /* floating point exception */
#define SIGKILL 9 /* kill (cannot be caught or ignored) */
#define SIGBUS 10 /* bus error */
#define SIGSEGV 11 /* segmentation violation */
#define SIGSYS 12 /* bad argument to system call */
#define SIGPIPE 13 /* write on a pipe with no one to read it */
#define SIGALRM 14 /* alarm clock */
#define SIGTERM 15 /* software termination signal from kill */
#define SIGURG 16 /* urgent condition on IO channel */
#define SIGSTOP 17 /* sendable stop signal not from tty */
#define SIGTSTP 18 /* stop signal from tty */
#define SIGCONT 19 /* continue a stopped process */
#define SIGCHLD 20 /* to parent on child stop or exit */
#define SIGCLD SIGCHLD /* compatibility */
#define SIGTTIN 21 /* to readers pgrp upon background tty read */
#define SIGTTOU 22 /* like TTIN for output if (tp->t_local<OSTOP) */
#define SIGIO 23 /* input/output possible signal */
#define SIGXCPU 24 /* exceeded CPU time limit */
#define SIGXFSZ 25 /* exceeded file size limit */
#define SIGVTALRM 26 /* virtual time alarm */
#define SIGPROF 27 /* profiling time alarm */
#define SIGWINCH 28 /* window size changes */
#define SIGUSR1 30 /* user defined signal 1 */
#define SIGUSR2 31 /* user defined signal 2 */
/*
* Special Sprite signals:
*/
#define SIGDEBUG 3 /* debug (same as quit in Sprite) */
#define SIGMIG 10 /* migrate process */
#define SIGMIGHOME 29 /* migrate process back to home node */
#ifndef KERNEL
/*
* This is taken more or less from K&R 2nd ed., section B9. Recall
* that signal() returns the previous handler.
*/
extern void (*signal _ARGS_((int sig,
void (*handler)(int sig)))) _ARGS_((int sig));
extern int sigblock _ARGS_ ((int mask));
extern int sigpause _ARGS_ ((int mask));
extern int sigsetmask _ARGS_ ((int mask));
#endif
/*
* Signal vector "template" used in sigvec call.
*/
struct sigvec {
void (*sv_handler)(); /* signal handler */
int sv_mask; /* signal mask to apply */
int sv_flags; /* see signal options below */
};
#define SV_ONSTACK 0x0001 /* take signal on signal stack */
#define SV_INTERRUPT 0x0002 /* do not restart system on signal return */
#define sv_onstack sv_flags /* isn't compatibility wonderful! */
/*
* Structure used in sigstack call.
*/
struct sigstack {
char *ss_sp; /* signal stack pointer */
int ss_onstack; /* current status */
};
#if 0
/*
* This declaration has been moved to the machine dependent file
* machSignal.h
*/
/*
* Information pushed on stack when a signal is delivered.
* This is used by the kernel to restore state following
* execution of the signal handler. On some systems it is also made
* available to the handler to allow it to properly restore state if a
* non-standard exit is performed. However, user programs should not
* rely on having access to this information.
*/
struct sigcontext {
int sc_onstack; /* sigstack state to restore */
int sc_mask; /* signal mask to restore */
int sc_sp; /* sp to restore */
int sc_fp; /* fp to restore */
int sc_ap; /* ap to restore */
int sc_pc; /* pc to restore */
int sc_ps; /* psl to restore */
};
#endif
#define BADSIG (void (*)())-1
#define SIG_DFL (void (*)())0
#define SIG_IGN (void (*)())1
#ifdef KERNEL
#define SIG_CATCH (void (*)())2
#define SIG_HOLD (void (*)())3
#endif
/*
* Macro for converting signal number to a mask suitable for
* sigblock().
*/
#define sigmask(m) (1 << ((m)-1))
#endif /* _SIGNAL */